Bebac user
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Egypt,
2022-03-10 12:45
(801 d 21:24 ago)

Posting: # 22829
Views: 1,702
 

 William's OR Latin square design [Study As­sess­ment]

In studies that have two tests (T1 T2) and one reference (R1)

If I treated them in statistical analysis as on part ---> it called " William's design"

But if I treated them in statistical analysis as two parts
(T1 vs R and T2 vs R) ---> it called "Latin square design"

IS THIS RIGHT?
Helmut
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Vienna, Austria,
2022-03-10 13:29
(801 d 20:40 ago)

@ Bebac user
Posting: # 22830
Views: 1,380
 

 Williams’ OR Latin square design

Hi Bebac user,

❝ In studies that have two tests (T1 T2) and one reference (R1)


❝ If I treated them in statistical analysis as on part ---> it called " William's design"


Depends. If the designs had six sequences (T1T2R|T1RT2|T2T1R|T2RT1|RT1T2|RT2T1), it was a Williams’ design. If it had three sequences (T1T2R|T2RT1|RT1T2), it was a Latin Square.

❝ But if I treated them in statistical analysis as two parts

❝ (T1 vs R and T2 vs R) ---> it called "Latin square design"


❝ IS THIS RIGHT?


No. Design evaluation. You can evaluate a Williams’ design either by a pooled ANOVA (that’s the ‘All-at-Once’ approach) or as two incomplete block designs (that’s the ‘Two-at-a-Time’ approach).
See this article.

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Bebac user
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Egypt,
2022-03-10 20:26
(801 d 13:43 ago)

@ Helmut
Posting: # 22834
Views: 1,406
 

 Williams’ OR Latin square design

Thank you so much
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